Auxiliary air-supply device for motors.



J. G; HAWLEY.

AUXILIARY AIR SUPPLY DEVICE FOR MOTORS.

APPLICATION FILED MAY 27. I916.

1,22OA19.. Patented Ma1a27, 1917.

Swuwioz JESSE G. HHWLEY a an srarns a r once.

JESSE G. HAWLEY, OF ELMIRA, NEW YORK, ASSIGNOR OF ONE-HALF TO WALTER SCOTT SMITH, F WATKINS, N'EW YORK.

AUX ILIARY AIR-SUPPLY DEVICE FOR MOTORS.

To all whom it may concern:

Be it known that I, JESSE G. HAWLEY a citizen of the United States, residing at 1 mira, in the county of Chemung and State of New York, have invented certain new and useful Improvements in Auxiliary Air- Supply Devices for Motors, of Which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved auxiliary air supply device for motors and has for its primary object to provide means i for automatically supplying air to the manifold of an internal combustion engine in the operation of the engine above a predetermmed speed, to decrease the richness of thegaseous mixture and proportionately lessen the consumption of gasolene.

It is another and more particular object of the invention to provide a device for the above purpose, whichis of such construction 'that it may be easily and quickly adjusted for application to high or low-powered gasolene motors, whereby the proper proportion of air will be automatically drawn into the manifold in \the {operation of the engine at various speeds.

The invention has for a further general object to provide a very simply constructed and efliciently operating device for the above purpose, the parts of whic h are not subject to excessive wear, and which may also be very easily and quickly adjusted and the en- Fig. 2 is a vertical section, the valve disks,

being in their normal positions, and r Fig. 3 is a similar view showing the relative positions of the valve disks when air is being drawn or sucked into the manifoldof the motor. a

Referring in detail to the drawing, 5 designates the manifold and 6 the conduit or connection leading from the manifold to the 'carbureter (not shown). My improved auxiliary air supply device or vitalizer includes Specification of Letters Patent.

Application filed may 27, 1916. Serial No. 100,299.

a casing generally indicated by the numeral 7, said casing being formed with a relatively large chamber 8 and a smaller chamber 9. At the juncture of the'walls of the chambers 8 and 9, an annular shoulder or valve Seat 10 is formed, projecting into the chamber 8. Adjacent to the other closed end of the chamber 9, a threaded opening is formed in the side wall thereof for the connection of a nipple 11 thereto. A threaded opening is tapped in the wall of the conduit or connection 6 toreceive this nipple. The other or upper end of the large chamber 8 is closed by a plate 12 suitably secured thereto by a suitable number of screws 13. This plate is formed with a central boss 14 and is providedwith a circular series of openings 15 in concentricrelation to said boss and adjacent thereto. a An annular flange 16 is formed upon the inner face of the plate 12, outwardly of the openings 15.

17 designates a rod or stem which is loosely movable through a tube 18. v This tube has threaded engagement through the boss 14 on thevplate 12 and the lower end of the tube is provided with a flange indicated at 19, against which one end of a coil spring 20, surrounding said tube, bears. The other end of said spring operatively engages a valve disk 21 loosely fitted upon the tube 18 and holds said valve disk normally against the annular flange 16, thereby cutting oil communication between the interior of the chamber 8 and the atmosphere. The tube 18 may be adjusted through the plate 12 to vary the tension of the spring 20 and is securely held in its adjusted position by means of a nut 22 threaded upon the upper end of the tube. The end of the rod 17 projecting above the tube is also threaded, and a nut 23 is engaged thereon.

Upon the lower end of the rod or stem 17 which projects below the tube 18, a valve disk 24 is loosely engaged, and this disk is yieldingly held normally against the end of the tube 18 by means of a spring 25. The spring 25 is quite strong, while the spring 20 which holds the valve disk'21 upon its seat, is relatively weak. The upper end of the spring 25 surrounds an annular shoulder formed upon the lower face of the valve disk, while the lower end of said spring surrounds a similar shoulder on the face of a washer plate 26 which is fixed to the lower end of the rod 17. Thus, the spring is effectively held off of the valve seat 10 and against the end of the sleeve 18. The space between this valve disk and its seat may be varied as desired, by the adjustment of the sleeve 18, as will be readily understood.

In Fig. 2 of the drawing, the valve disks 21 and 24 are shown in their normal positions, and it will be observed that no air can enter the manifold of the motor through the ports or openings 15. This closed position of the valve is maintained while the motor is running at a predetermined minimum speed, say 10 miles per hour. When the motor is not running, the valve disk 24 is held off of its seat by the spring 25 against the end of the sleeve 18, and as soon as the motor is started the vacuum draws this valve disk down upon its seat so that said valve, as well as the outer valve disk 21, is in its closed position. In-these motors equipped with self-starting means, the outer valve disk 21 may be eliminated, but in cranking the engine to start the same, this valve disk is lifted from its seat against the action of the weak spring 20 by the vacuum in the intake, so as to admit a small amount of air to the cylinder.

When the throttle is opened to increase the speed of the motor, the vacuum in the intake manifold is released and the spring 25 will then act upon the valve disk 24 to lift the same from its seat 10 so that the air will be sucked from the chamber 8 around said valve disk and into the motor. This suction also holds the disk 21 off of its seat against the action of the spring 18. In this manner, it will be seen that atmospheric air. is admitted to the manifold for mixture with the gas, so as to decrease the richness of the gaseous mixture, and thereby decrease the consumption of gasolene to a proportionate extent- By the adjustment of the nut 23, the tension of the spring 25 which holds the valve disk 2-1 off of its seat, may be varied in accordance with the power generated by the motor, and the extent of movement of the valve disk between its seat and the end of the sleeve 18 may also be properly varied and adjusted in the manner heretofore explained.

From the foregoing description, taken in connection with the accompanying drawing, the construction, manner of operation and several advantages of the invention will be clearly and fully understood. The device is relatively simple in its construction and acts positively and automatically to vitalize the gaseous mixture by the admixture of atmospheric air therewith when the motor attams a predetermined speed. All of the parts being constructed of metal, the same are not subject to excessive wear sothat the efiiciencyof the device will be in nowise impaired after long continued use. .I have above referred to a nipple connection 11 between one side of the chamber 9 and the mamfold connectlon .6, but it is manifest, of course, that this nipple connection may be made between the end or base wall of the chamber 9 and said manifold connection so that the device will project laterally from the side of the conduit 6 instead of vertically with respect thereto. The invention as above disclosed has been thoroughly tested in practical use and a motor vehicle driven on one'quart of gasolene at a speed of 30 miles per hour for 4.2 miles. A proportionate saving in the consumption of gasolene was obtained in traversing greater distances.

The several parts of thedevice can be very readily assembled in their proper operative positions and adjusted in accordance with the particular type of motor upon which the device is to be used. The invention may also be readily applied to the ordinary motor without requiring any material changes in its construction, as it is only necessary to tap the threaded hole in the manifold connection to receive the nipple 11 which is supplied with the attachment. I have described and illustrated an embodiment of the invention which I have found to be very desirable in practical use, but it is to be understood that the device is susceptible of considerable modification in the form, proportion and arrangement of its several elements and I, therefore, reserve the privilege of adopting all such legitimate modifications as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent is 1. An air supply device for the intake manifold of an internal combustion engine including a. casing having two chambers and a nipple connecting one of said chambers to the manifold, said casing being provided with air inlet ports communicating with the other chamber, a spring-pressed valve disk normally closing communication between said latter chamber and the atmosphere, and a second valve normally disposed in an open position, but held by a predetermined degree of vacuum in the intake manifold during the normal operation of the motor in closed position to cut off communication between said chambers, a decrease of the vacuum permitting the latter-valve to move to open position whereby the suction in the manifold opens the valve disk to admit atmospheric air to the manifold.

- 2. An air supply device for the intake manifold of an internal combustion engine including a casing having communicating chambers and a nipple connecting one of said chambers to the manifold, said casing being provided with a plurality-of air inlet ports communicating with the other chamber, a

spring-pressed valve disk normally closing said air inlet ports, and a second springpressed valve disk normally held in open position and moved by the vacuum in the intake manifold to a closed position to cut off communication between said chambers, said latter valve. disk moving to its open position upon a decrease of the vacuum and permitting the suction in-the manlfold to move the first named disk to *an open position when the engine attains a predetermined speed.

3. An air supply. device for the ntake manifold of an internal combustion eng ne including a casing having communicatlng chambers and a nipple connecting one of said chambers to the manifold, saidcasing being provided with a plurality of air inlet ports communicating with the other chamber, a spring-pressed valve disk normally closing said air inlet ports, a second spr1ngpressed valve disk normally held in open position and moved by the vacuum in the intake manifold to a closed position to cut off communication between said chambers, an adjustable stop to limit the opening movement of the second named valve disk, said latter valve disk being moved to its open position upon a decrease of the vacuum and permitting the suction in the manifold to move the first named valve disk to an open position when the engine attains a predetermined speed. I

4. An air supply device for the intake manifold of an internal combustion engine including a casing having communicating chambers and a nipple connecting one of said chambers to the manifold, said casing being provided with a plurality of air inlet ports communicating with the other chamber, a spring-pressed valve disk normally closing said air inlet ports, a second spnngpressed valve disk normally held in open position and moved by the vacuum in the intake manifold to a closed position to out 01f communication between said chambers, an adjustable stop to limit the opening movement of the second named valve disk, means for varying the tension of the spring for the second named valve disk, said latter valve disk being moved to its open position upon a decrease of the vacuum and permitting the suction in the manifold to move the first named valve disk to anopen position when the engine attains a predetermined speed.

5. An air supply device for the intake manifold of an internal combustion engine including a casing having communicating chambers and a nipple connecting one of said chambers to the intake manifold, a detachable plate closing one of said chambers, said plate having a plurality of air inlet openings, a sleeve having adjustable threaded engagement in said plate and extending axially into the latter chamber, a

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rod extending through said sleeve and into of said sleeve in an open position, said latter valve disk being maintained in a closed position against the action of its spring by the vacuum in the manifold during the normal operation of the engine and moved to an open position by the spring upon a decrease of the vacuum, whereby the suction in the manifoldmoves the first named valve disk to an open position and permits atmospheric air to enter said chamber.

6. An air supply device for internal combustion engines including a casing having two chambers, one of which is connected to the manifold of the engine, the other chamber having air inlet ports, spaced valves arranged in the other chamber, means co-acting with one of the valves to normally close the air inlet ports, the other of said valves being normally open but held in closed position by a predetermined degree of vacuum in the engine cylinder to close communication between said chambers, and means independently co-acting with the latter valve to move the same to its open position upon a decrease of the vacuum, whereby the suction in the manifold will move said first named valve to open position and admit atmospheric air to the manifold.

7. An air supply device for internal combustion engines including a casing connected to the manifold of the engine and having air inlet ports, and independently operable valves mounted within said casing, one of which normally closes the air inlet ports, the other of said valves being normally open but held in closed position by a predetermined degree of vacuum in the manifold, said latter valve opening upon a decrease of the vacuum whereby the suction in the manifold operates to move the first named valve to open position and admit atmospheric air to the manifold.

8. An air supply device for internal combustion engines including a casing having two chambers, one of which is connected to the manifold of the engine, a valve normally open but held in its closed position by a predetermined de cc of vacuum in the manifold to cut 0 communication between the valve chambers, the other of said chambers having air inlet ports, an independently operable, spring-pressed valve normally closing said ports, and means operating to move the first named valve to its open position upon a decrease of the vacuum to permit the suction in the manifold to move the second named valve to its open position.

9. An air supply device for internal combustion engines including a casing having an air inlet chamber, means connecting said chamber to the intake manifold, said casing being provided with an internal valve seat, a normally open valve held upon said seat by the vacuum in the intake to cut olf the admission of atmospheric air to the manifold, an adjustable stop member, means acting to unseat the valve and move the same into engagement with the stop member when the vacuum in the intake is decreased by the opening of the throttle, and an additional independently operable valve normally closing the air inlet to the valve casing and moved to its open position by the 1,

JESSE G. HAWLEY. Witnesses CHAS. R. DoscH, PETER DOSCH. 

